APA (7th ed.) Citation

National Geographic Society (U.S.) & Matthews-Northrup Works. (1921). Map of Asia and adjoining Europe with a portion of Africa. The Society.

Chicago Style (17th ed.) Citation

National Geographic Society (U.S.) and Matthews-Northrup Works. Map of Asia and Adjoining Europe with a Portion of Africa. Washington, D.C.: The Society, 1921.

MLA (9th ed.) Citation

National Geographic Society (U.S.) and Matthews-Northrup Works. Map of Asia and Adjoining Europe with a Portion of Africa. The Society, 1921.